package com.cow.support.util;

import javax.servlet.http.HttpServletRequest;

public class WebUtil {
	/**
	 * ��ȡ�ͻ���ip 
	 */
	  public static String getIp(HttpServletRequest request) {    
	       String ip = request.getHeader("x-forwarded-for");    
	       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
	            ip = request.getHeader("Proxy-Client-IP");    
	       }    
	        if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
	           ip = request.getHeader("WL-Proxy-Client-IP");    
	         }    
	       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
	           ip = request.getRemoteAddr();    
	       }    
	      return ip;    
	 }   
}
